/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.otod.security.service;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.otod.security.data.UserMapper;
import org.otod.security.domain.User;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * The Spring/Hibernate sample application's one and only configured Apache Shiro Realm.
 *
 * <p>Because a Realm is really just a security-specific DAO, we could have just made Hibernate calls directly
 * in the implementation and named it a 'HibernateRealm' or something similar.</p>
 *
 * <p>But we've decided to make the calls to the database using a UserDAO, since a DAO would be used in other areas
 * of a 'real' application in addition to here. We felt it better to use that same DAO to show code re-use.</p>
 */
public class MiniWebRealm extends AuthorizingRealm {

	protected UserMapper userMapper;

	public MiniWebRealm() {
		setName("MiniWebRealm"); //This name must match the name in the User class's getPrincipals() method
	}

	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken) throws AuthenticationException {
		UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
		User user = userMapper.getUserByUsername(token.getUsername());
		if (user != null) {
			return new SimpleAuthenticationInfo(user.getUsername(), user.getPassword(), getName());
		} else {
			return null;
		}
	}

	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
		String username = (String) principals.fromRealm(getName()).iterator().next();
		User user = userMapper.getUserByUsername(username);
		if (user != null) {
			SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
			System.out.println("这里有执行过");
			return info;
		} else {
			return null;
		}
	}

	@Autowired
	public void setUserMapper(UserMapper userMapper) {
		this.userMapper = userMapper;
	}

}
